P1E70 Buick Code - Hybrid/Electric Vehicle Battery 69 Circuit
Quick Answer
The Hybrid/Electric Vehicle battery pack contains 288 cells. Common causes include Faulty Hybrid/Electric Vehicle Battery Pack, Faulty Hybrid/Electric Vehicle Battery Interface Control Module. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1E70 Buick indicates Hybrid/Electric Vehicle Battery 69 Circuit.
- Common causes
- Common causes include Faulty Hybrid/Electric Vehicle Battery Pack, Faulty Hybrid/Electric Vehicle Battery Interface Control Module.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P1E70 Buick Description
The battery energy control module monitors the voltage of the 96 battery cell groups through the four hybrid/EV battery interface control modules. Voltage sense circuits are attached to each individual cell group, and these sense circuits terminate at a connector located on the top surface of the battery section. A serviceable auxiliary battery wiring harness joins this connector to a hybrid/EV battery interface control module, also located on the top surface of the battery section. The hybrid/EV battery interface control module encodes the voltage reading and transmits it to the battery energy control module through the battery control harness. There is one hybrid/EV battery interface control module located on battery sections one and two, and two hybrid/EV battery interface control modules associated with battery section three. The hybrid/EV battery interface control module, battery energy control module wiring harness, auxiliary battery wiring harness, and battery energy control module are all considered serviceable components.
The battery energy control module will determine when a fault condition is present. Diagnostics and system status are communicated from the battery energy control module to hybrid/EV powertrain control module 2 through serial data. The hybrid/EV powertrain control module 2 is the host controller for diagnostic trouble code information.
What are the Possible Causes of the DTC P1E70 Buick?
- Faulty Hybrid/Electric Vehicle Battery Pack
- Faulty Hybrid/Electric Vehicle Battery Interface Control Module
How to Fix the DTC P1E70 Buick?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1E70 Buick code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P1E70 Buick Code
1. What does the OBDII code P1E70 mean on a Buick?
P1E70 indicates an issue with the Hybrid/Electric Vehicle Battery 69 Circuit, which refers to a specific electrical circuit related to the battery pack's operation or monitoring.
2. What are the symptoms of a P1E70 code?
Symptoms may include the illumination of the check engine light, reduced fuel efficiency, limited electric mode functionality, and potential loss of hybrid system performance.
3. What causes the P1E70 code on a Buick?
Common causes include a faulty battery pack sensor, damaged wiring or connectors in the circuit, or an issue with the hybrid battery control module.
4. Can I drive my Buick with a P1E70 code?
While the vehicle may still be drivable, it's not recommended to ignore this code, as it can lead to reduced hybrid system efficiency or further damage.
5. How is the P1E70 code diagnosed?
A technician will use a scan tool to retrieve the code, inspect the battery circuit wiring and connectors, and test the hybrid battery control module for proper operation.
6. What repairs can fix the P1E70 code?
Repairs may include replacing a damaged sensor, repairing or replacing faulty wiring, or reprogramming or replacing the hybrid battery control module.
7. How much does it cost to repair a P1E70 code?
Costs vary depending on the issue, but repairs can range from $100 for minor wiring fixes to over $1,000 for module or battery-related repairs.
8. Can a dead hybrid battery cause the P1E70 code?
While a dead hybrid battery is not a direct cause, issues within the battery pack or its circuits can trigger this code.
9. How can I prevent the P1E70 code from recurring?
Regular maintenance of the hybrid system, including inspecting wiring and connectors, can help prevent this code from recurring.
10. Does the P1E70 code require reprogramming the control module?
In some cases, reprogramming the hybrid battery control module may be required as part of the repair process, depending on the diagnosis.
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